Cooking apparatus



P. T. JACKSON.

COOKING APPARATUS.

APPLICATION FILED 061126, 1918.

Patented Feb. 3,1920.

2 SHEETS-SHEET I.

P. T. JACKSON.

COOKING APPARATUS.

APPLICATION FILED car. 26. 19:8.

Patented Feb. 3,1920.

2 SHEETS-SHEET 2 PHILIP T. JACKSON, 0F TORONTO, ONTARIO, CANADA.

COOKING APPARATUS.

Specification of Letters Patent.

Patented Feb. 3, 1920.

Application filed October 26, 1913. Serial No. 259,796.

To all whom it may concern:

Be it known that I, PHILIP T. JAoKsoN, of the city of Toronto, in the county of York, Province of Ontario, Canada, have invented certain new and useful Improvements in Cooking Apparatus, of which the following is a specification.

The object in the present invention is to devise means whereby the cooking of food may be effected with the use of a minimum of fuel and particularly to devise a cooker of the retained-heat type in which fuel may be burned to supply the heat required for cooking.

I attain my object by means of the constructions hereinafter described and illustrated in the accompanying drawings in which Figure 1 is a vertical section of my improved apparatus provided with a fire basket adapted to burn solid fuel and showing the apparatus arranged for boiling, roasting and stewing;

Fig. 2 a similar view showing the lower part of the device provided with a burner for a fluid fuel;

Fig. 3 a vertical section of the upper part of the device taken at right angles to the section of Fig. 1 and showing the apparatus arranged for frying, broiling, and toasting;

Fig. t an elevation of the ash receptacle and extinguishing chamber showing a fuel basket and supporting tube in position and the extinguishing cover in place;

Fig. 5 a plan view of part of the grid shown above the fuel basket in Fig. 1;

Fig. 6 a similar view of the grid shown next above the burner in Fig. 2;

Fig. 7 a side elevation of the top of the device constructed as shown in Fig. 1 showing particularly the damper controlling the admission of air;

Fig. 8 a horizontal cross section through the air inlet passage and damper; and

Fig. 9 a side elevation of the warming chamber adapted to fit on top of the cooking apparatus or the ash receptacle in place of the ordinary cover. I

In the drawings like numerals of reference indicate corresponding parts in the.

cookers. Located inside the casing at the bottom is a mass 2 of material of high specific heat, the mass being suflicient to provide storage for heat to be subsequently given off when the device is used for retained-heat cooking. Preferably this mass is formed as a cast iron pan forming part of the interior lining of the casing. At the upper end of the casing is formed a flue gas chamber 3, of which 4: is the wall suitably secured to the top of the casing 1. An inwardly extending flange 5 is formed on this wall on which may rest the ring 6 on which is suspended the tube 7. The flange 5 and ring 6 thus form an annular air chamber 8 communicating with the annular space 9 between the inner wall of the casing and the outside of the tube 7. Air may be admitted in any desired manner to this air chamber. 1

hen a solid combustible fuel is to be employed, I prefer to employ the construction shown in Figs. 1, 7 and 8. An elongated opening 10 is formed through the flange 5, and the wall 4 where this opening is formed, is inwardly offset as shown to bring the opening into communication with the atmosphere while shutting it off from the smoke chamber. A slide damper 11 of ordinary construction is provided whereby the access of air to the opening 10 may be controlled.

The smoke chamber is completed by aremovable cover 12 and a smoke collar 13 is provided extending from the side wall of the chamber. An ordinary damper 14 is preferably provided in the smoke collar,

which-collar, when the apparatus is in use,

willbc connected with a suitable smoke ported thereon, a shoulder 16 being formed at the lower end of the tube on which the pe, v V A fuel basket 15 is located at the lower 7 end of the tube 7 and is preferably suppass through the damper 11, the opening 10,

down through the annular space 9, and thence under the fuel basket and through the fuel therein, and the products of com- I *bustion will rise up within the tube 7 and pass up to the smoke chamber 3 and thence through the smoke collar 13 to the smoke pipe.

' flocking utensi s may be either supported I within the tube as shown in Fig. 1 or at the top of the tube as shown in Fig. 3. To support a cooking utensil within the tube 1 provide a grid 17, preferably of cast iron and of sufiicient mass to store up heat to be-subsequently given out when the device is used as a retained-heat cooker. This device may be constructed as shown in Fig. 5 with openings 18 for the passage of the products of combustion and with ribs 19 to support a pot 20.

In the device so far as described, the fire may be maintained during the whole time of cooking, but for many purposes after the device and the food contained therein is thoroughly heated, the tube 7 and the fuel basket 15 may be removed, the pot set down on the iron pan 2 and the grid 17 placed on top of the pot, which will, of course, be covered over. A circular heat insulated plug cover 21 indicated in dotted lines in Fig. 1, is then used to close the open end of the casing, and cooking thereafter goes on under the action of the retained-heat of the pot and its contents, the iron pan 2 and the grid 17. The plug is preferably provided with a steam escape valve such as commonly employed in cooking apparatus.

If the device is to be used with a fluid fuel such as natural or artificial gas, 1 locate'in the bottom of the casing a burner 22 of ordinary type, of which 23 is the mixing ch amber and 2t the supply pipe. The grid 39 above the burner is preferably of a more open type than the grid 17 (see Fig. 6) and always remains in place.

In this supply pipe is located a control valve 25. When such a burner is used, control of the air supply to the air chamber 8 is not material and the dampers may be omitted.

In Fig. 3 I show the arrangement whereby broiling frying and toasting may be effected. The ordinary cover for the smoke chamber 3 is replaced by a special cover comprising an annular rim 27 and a circular cover 28 adapted to fit the circular opening in the rim. This cover is preferably well domed, and is provided with a depending apron 29 for a purpose which will hereinafter appear.

30 is a cooking pan, which may be either a frying pan, grid iron, or the like. This cooking pan is provided with lugs 31 adapted to rest on the rim of the tube 7 and the pan is so proportioned that there is a free escape for the products of combustion between it and the rim of the tube. Preferably also lugs 32 are secured to the pan 30 adapted to engage the under side of the rim 27 to prevent the pan being accidentally lifted or disturbed when turning meat or other food being cooked.

The apron 29- on the cover prevents splashes from the cooking foodfiying out into the smoke chamber, while the donning of the cover removes the inner surface of the latter as far as possible from the path of any such splashing. The fumes from the cooking pass out from under this apron and escape with the products of combustion.

As it is preferable for broiling or frying to have the source of heat as close as possible to the food, the tube 7 is replaced by a similar but much shorter tube 33, thus bringing the fire basket close up to the food to be broiled, etc. The fire basket 15 is suspended on a rim 3 1 some distance up the tube. This arrangement allows the tube to extend down below the bottom of the basket at 35, thus protecting the inner wall of the cooker from the direct heat of the fire in the basket. The bail handle 41 on the fire basket allows it to be lifted from one tube to another and thus avoids the necessity of dumping the fire.

In Fig. 4, I show a vessel 36 of sufficient diameter to receive the tube 7 or 33, the ring 6 to which the tube is connected being adapted to rest on the rim of this vessel. A cover 37 is provided adapted to fit Within the upper end of the tube 7 or 33. This vessel. 36 serves as an ash container, the ashes being readily shaken out of the fuel basket after the tube carrying the fuel basket has been placed in the receptacle. The fire in the basket is readily extinguished by placing the cover 37 in position. The fuel basket and tube may also be used in another outer casing if desired while food is cooking in the first under the action of the retained heat.

In Fig. 9 I show a warming closet 38 that may be fitted either to the top of the cooking device or on the ash receptacle to replace the cover 12 of the smoke chamber 3 or the covers 27 or 28. This warming closet is provided with. a flange 19 adapted to rest on the wall 4: to support the closet.

The bottom of this closet is provided. with a well 4L0 that will fit inside the annular cover 27 or in the tube 7 or 33 when the tube and fuel basket are placed in the ash receptacle. The walls of this well tend to absorb any Waste or residual heat and to transfer it to the warming chamber by conduction. Pivoted bail handles a1 are provided wherever necessary to facilitate the handling of movable parts and such bails will usually be provided with loops 42 midway between their ends so that they will balance when lifted by a hook or other tool engaged in the loops, (see Figs. 5 and 6.)

l/Vhat I claim as my invention is 1. Cooking apparatus comprising a double walled casing, the space between the walls being closed at the top; an upward extension of the outer wall of the casin an inb 3 wardly extending-"flange on said wall eXtension above and spaced from the closed top of the casing walls, forming withthe top and said extension an annular air inlet chamber; a sleeve hung from said flange and spaced from the inner wall of the casing, the annular air chamber aforesaid communicating with the space about said sleeve; a removable cover fitted to the said extension of the outer wall of the casing forming with the wall extension and sleeve a chamber for the products of combustion separated from the air chamber by the flange aforesaid; and a fuel basket at the lower end of the sleeve.

2. Cooking apparatus constructed as set forth in claim 1 in which the lower part of the inner lining of the casing is formed of a mass of material of high specific heat.

3. Cooking apparatus constructed as set forth in claim 1 in which the depending sleeve is removably supported on the flange and the fuel basket supported in the lower end of the sleeve.

4. Cooking apparatus comprising a casing; a mass of material of high specific heat located inside the casing at the bottom; a depending sleeve fitted within the casing and spaced from the inner wallthereof; an annular air inlet chamber formed at the top of the casing communicating with the space between the sleeve and the casing; a chamber for the products of combustion separate from the air chamber and communicating with the upper end of the sleeve; a removable cover closing the said chamber for the products of combustion; a fuel basket at the lower end of the sleeve; and cooking vessel removably supported by said sleeve.

5. Cooking apparatus comprising a casing; a depending sleeve removably fitted within the casing and spaced from the inner wall thereof; an annular air inlet chamber formed at the top of the casing communicating with the space between the sleeve and the casing;-a chamber for the products of combustion separate from the air chamber and communicating with the upper end of the sleeve and having an opening at its upper side of suflicient size to permit of the introduction or removal of the sleeve; a removable cover for the said chamber for the products of combustion; a fuel heating means at the lower end of the sleeve; and a cooking vessel removably supportable by said sleeve.

6. Cooking apparatus comprising a double walled casing, the space between the walls being closed at the top; a mass of material of high specific heat located inside the casing at the bottom; an upward extension at the top of the casing; a removable cover closing the top of the extension; a removable dependent sleeve fitted within the casing and spaced from the inner wall thereof; an annular flange forming with the sleeve and said extension and the cover an air inlet chamber at the top of the casing communicating with the space between the sleeve and the casing, and a chamber for the products of combustion separate from the air chamber and communicating with the upper end of the sleeve; fuel burning means located within the casing at the lower end of the sleeve and situated immediately above the mass of material aforesaid; and a heat insulated cover adapted to close the top of the inner wall of the casing when the sleeve is removed.

7. Cooking apparatus constructed substantially as set forth in claim 6 in which a grid of considerable mass and formed of material of high specific heat is removably supported immediately above the fuel burning means.

8. Cooking apparatus constructed as set forth in claim 6 in which the fuel burning meaps is directly supported by the lower end of the sleeve immediately above the mass of material at the bottom of the casing.

9. Cooking apparatus comprising a casing; a depending sleeve fitted within the casing and spaced from the inner wall thereof formed at the top of the casing communicating with the space between the sleeve and the casing; a chamber for the products of combustion separate from the air chamber and communicating with the upper end of the sleeve, said chamber having an opening in its upper side of greater diameter than the inner wall of the casing; a removable cover for the said chamber for the products of combustion; fuel burning means located within the casing at the lower end of the sleeve; and a heat insulated cover adapted to pass through the opening in the said chamber for the products of combustion and to close into the upper end of the casing when the sleeve is removed.

10. Cooking apparatus construction substantially as set forth in claim 9 in which a mass of material of high specific heat is located inside the casing at the bottom.

11. Cooking-apparatus comprising a casing; a depending sleevefitted within the casing and spaced from the inner wall thereof; an annular air inlet chamber formed at the top of the casing communicating with the space between the sleeve and the casing; a chamber for the products of combustion separate fromthe air chamber and communicating with theupperend of the sleeve; and a fuel basket at the lower 7 i formed at the top of the casing connnunition; fuel burning means removably supeating with the space between the sleeve ported by the sleeve; and a. heat insulated and the casing; a chamber for the products cover adapted to close the upper end of the 10 of combustion separate from the air chem casing when the sleeve is removed.

ber and communicating with the upper end Signed at Toronto this 21st day October, of the sleeve; a removable cover for the 1918.

said chamber for the products of conibus- PHILIP T. JACKSON. 

